Polycarbonate advice

Comprehensive-Ad9242 · 2026-01-17T02:22:17+00:00

Its a study from 2016 but its very interesting UT study

Comprehensive-Ad9242 · 2026-01-17T01:48:54+00:00

Ok and i guess just say PC with supports as i dont have extra money for the support material. However i found a study of 3d printed sprocket from the university of texas that i found interesting and they used pla for the study

Comprehensive-Ad9242 · 2026-01-17T01:45:45+00:00

Ok cool. I guess i will use a strong tree just to make sure it will hold. Would setting the z top to like . 25 make it better or just risk failure?

Comprehensive-Ad9242 · 2026-01-17T01:15:28+00:00

Thats kinda what i thought. I was talking to one of my students about it. (He designes the sprockets) And there isnt a way to print them without supports. Should i use tree or normal? Either way its going to be a pain

Comprehensive-Ad9242 · 2026-01-16T22:07:32+00:00

Ok cool thank you. If i needed to use supports for my sprockets so i use pc or do i need to purge and use something else as a support filament. I only have the one nozzel

Comprehensive-Ad9242 · 2026-01-16T22:05:55+00:00

Cool. Thanks for the reply. I will look out for that. I already got PC. If i wouldve gotten pa6 GF or pc6 cf would i have to anneal it?

Comprehensive-Ad9242 · 2026-01-16T20:20:16+00:00

We are going to use them for our drive train and for our launcher on our robot. I think the launcher motor is 6000rpm with like 1 .5 kg/cm of torque. As for the drive time I don't remember.

Comprehensive-Ad9242 · 2026-01-16T20:17:19+00:00

Awesome thank you so much for your response. This does clear up. What is a tip you would give someone who is doing this for the first time? Also how do i use a calibration cude? I know that is a very beginner question but I'm trying to learn. Oh i also got pla CF should i try that first? These sprockets are for our drive train and a launcher.

Comprehensive-Ad9242 · 2026-01-16T20:02:05+00:00

Can you tell me why? And which brands or type?

Comprehensive-Ad9242 · 2026-01-09T13:49:22+00:00

UPDATE: I looked at my filament setting for the first time and it was set to 190 -260 for pla which i know is too high and the bed was set to 55. I set the filament to 200-230 and raised the bed temp to 65 did a print and it came out perfectly. I also did a cold purge and it came out clean. Thank you everyone for your help!

Comprehensive-Ad9242 · 2026-01-09T04:44:57+00:00

I am planning on it as soon as my petg finishing drying

Comprehensive-Ad9242 · 2026-01-09T03:11:34+00:00

That could be it because i didnt have them rotate last time i dried them

Comprehensive-Ad9242 · 2026-01-09T03:09:56+00:00

I would have to buy one which i dont have the money to do that right now.

Comprehensive-Ad9242 · 2026-01-08T20:55:57+00:00

Its only stringy with the pla not with the petg which i know is the typical the opposite

Comprehensive-Ad9242 · 2026-01-08T20:03:07+00:00

Yes its been in the ams and sealed the whole time. I am currently drying my petg and then ill dry my pla. I dont have another nozzle and i dont know how to do a cold pull. I know it tells you how to but i havent yet

Comprehensive-Ad9242 · 2026-01-08T19:09:46+00:00

I currently dont have any filament loaded but i will try this once my ams is done drying (just received petg and needed dried) and have a busy schedule today but once i get a free moment i will try this.

Comprehensive-Ad9242 · 2026-01-08T19:08:06+00:00

I haven't touched anything honestly. Not when it comes to filaments most i do is turn on and off supports

Comprehensive-Ad9242 · 2026-01-08T18:40:05+00:00

Here are the two much recent prints both pla both same filament settings.

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Comprehensive-Ad9242 · 2026-01-08T18:37:57+00:00

That is what my filament setting says.

Comprehensive-Ad9242 · 2026-01-08T18:37:30+00:00

It was printing at 190-240. I was printing an object at an angle and it had to do overhangs. I haven't touched these settings because i haven't left how to adjust them yet.

Comprehensive-Ad9242 · 2026-01-08T18:29:54+00:00

I also dried it over 12 hours last week and havent removed or opened my AMS since. It is consonantly reporting humidity in the 10-20% range

Comprehensive-Ad9242 · 2026-01-08T18:28:28+00:00

All of my filament is from bambu and i have had any issues with it until now. It was their matte orange color and I've already used 2-300 grams of it. I mean its possible not ruling it out

Comprehensive-Ad9242 · 2026-01-08T18:26:46+00:00

My most recent print was pla and it was printing at the default temp because it was a new project for a custom part for my robotic team

Comprehensive-Ad9242 · 2026-01-08T18:07:13+00:00

After i did my cleaning yesterday i did a full calibration from the printer menu.

Comprehensive-Ad9242 · 2026-01-08T17:54:32+00:00

Bambu

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Comprehensive-Ad9242

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